221431357121070 has 16 divisors (see below), whose sum is σ = 531435257090640. Its totient is φ = 59048361898944.

The previous prime is 221431357121069. The next prime is 221431357121137. The reversal of 221431357121070 is 70121753134122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3690522618655 + ... + 3690522618714.

It is an arithmetic number, because the mean of its divisors is an integer number (33214703568165).

Almost surely, 2^{221431357121070} is an apocalyptic number.

221431357121070 is an abundant number, since it is smaller than the sum of its proper divisors (310003899969570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221431357121070 is a wasteful number, since it uses less digits than its factorization.

221431357121070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381045237379.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 221431357121070 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, three hundred fifty-seven million, one hundred twenty-one thousand, seventy".